/Engine/Source/Editor/SourceControlWindows/Public/SourceControlWindows.h
Display check in dialog for the specified packages and get additional result information
true - if completed successfully in progress and OnCompleteDelegate will be called when complete, false - if immediately unable to comply (such as source control not enabled)
static bool PromptForCheckin ( [FCheckinResultInfo](API\Editor\SourceControlWindows\FCheckinResultInfo) & OutResultInfo, const [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & InPackageNames, const [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & InPendingDeletePaths, const [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & InConfigFiles, bool bUseSourceControlStateCache )